Finding the Third Proportional to 91,351,864 and 215,581,116

Step by Step Solution

1. Step 1: Write the proportion equation
   91,351,864 : 215,581,116 = 215,581,116 : x
2. Step 2: Convert to fraction form
   91,351,864/215,581,116 = 215,581,116/x
3. Step 3: Cross multiply
   91,351,864x = 215,581,116 × 215,581,116
4. Step 4: Simplify right side
   91,351,864x = 46,475,217,575,805,456
5. Step 5: Solve for x
   x = 46,475,217,575,805,456/91,351,864
6. Step 6: Final answer
   x = 508,749,526.73