Finding the Third Proportional to 12,352,989 and 17,820,814.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,352,989 : 17,820,814.50 = 17,820,814.50 : x
2. Step 2: Convert to fraction form
   12,352,989/17,820,814.50 = 17,820,814.50/x
3. Step 3: Cross multiply
   12,352,989x = 17,820,814.50 × 17,820,814.50
4. Step 4: Simplify right side
   12,352,989x = 317,581,429,443,410.25
5. Step 5: Solve for x
   x = 317,581,429,443,410.25/12,352,989
6. Step 6: Final answer
   x = 25,708,873.33