Finding the Third Proportional to 12,429,342,231 and 26,631,571,636.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429,342,231 : 26,631,571,636.50 = 26,631,571,636.50 : x
2. Step 2: Convert to fraction form
   12,429,342,231/26,631,571,636.50 = 26,631,571,636.50/x
3. Step 3: Cross multiply
   12,429,342,231x = 26,631,571,636.50 × 26,631,571,636.50
4. Step 4: Simplify right side
   12,429,342,231x = 709,240,607,830,031,335,424
5. Step 5: Solve for x
   x = 709,240,607,830,031,335,424/12,429,342,231
6. Step 6: Final answer
   x = 57,061,797,370.19