Finding the Third Proportional to 188,188,436 and 407,653,499

Step by Step Solution

1. Step 1: Write the proportion equation
   188,188,436 : 407,653,499 = 407,653,499 : x
2. Step 2: Convert to fraction form
   188,188,436/407,653,499 = 407,653,499/x
3. Step 3: Cross multiply
   188,188,436x = 407,653,499 × 407,653,499
4. Step 4: Simplify right side
   188,188,436x = 166,181,375,246,943,008
5. Step 5: Solve for x
   x = 166,181,375,246,943,008/188,188,436
6. Step 6: Final answer
   x = 883,058,379.03