Finding the Third Proportional to 91,351,818 and 215,581,018

Step by Step Solution

1. Step 1: Write the proportion equation
   91,351,818 : 215,581,018 = 215,581,018 : x
2. Step 2: Convert to fraction form
   91,351,818/215,581,018 = 215,581,018/x
3. Step 3: Cross multiply
   91,351,818x = 215,581,018 × 215,581,018
4. Step 4: Simplify right side
   91,351,818x = 46,475,175,321,916,320
5. Step 5: Solve for x
   x = 46,475,175,321,916,320/91,351,818
6. Step 6: Final answer
   x = 508,749,320.37