Finding the Third Proportional to 12,139,365 and 26,000,412

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139,365 : 26,000,412 = 26,000,412 : x
2. Step 2: Convert to fraction form
   12,139,365/26,000,412 = 26,000,412/x
3. Step 3: Cross multiply
   12,139,365x = 26,000,412 × 26,000,412
4. Step 4: Simplify right side
   12,139,365x = 676,021,424,169,744
5. Step 5: Solve for x
   x = 676,021,424,169,744/12,139,365
6. Step 6: Final answer
   x = 55,688,367.90