Finding the Third Proportional to 99,038,325 and 217,208,499

Step by Step Solution

1. Step 1: Write the proportion equation
   99,038,325 : 217,208,499 = 217,208,499 : x
2. Step 2: Convert to fraction form
   99,038,325/217,208,499 = 217,208,499/x
3. Step 3: Cross multiply
   99,038,325x = 217,208,499 × 217,208,499
4. Step 4: Simplify right side
   99,038,325x = 47,179,532,037,833,000
5. Step 5: Solve for x
   x = 47,179,532,037,833,000/99,038,325
6. Step 6: Final answer
   x = 476,376,514.22