Finding the Third Proportional to 86,355,418 and 123,489,262

Step by Step Solution

1. Step 1: Write the proportion equation
   86,355,418 : 123,489,262 = 123,489,262 : x
2. Step 2: Convert to fraction form
   86,355,418/123,489,262 = 123,489,262/x
3. Step 3: Cross multiply
   86,355,418x = 123,489,262 × 123,489,262
4. Step 4: Simplify right side
   86,355,418x = 15,249,597,829,304,644
5. Step 5: Solve for x
   x = 15,249,597,829,304,644/86,355,418
6. Step 6: Final answer
   x = 176,591,095.06