Finding the Third Proportional to 64,810 and 87,098

Step by Step Solution

1. Step 1: Write the proportion equation
   64,810 : 87,098 = 87,098 : x
2. Step 2: Convert to fraction form
   64,810/87,098 = 87,098/x
3. Step 3: Cross multiply
   64,810x = 87,098 × 87,098
4. Step 4: Simplify right side
   64,810x = 7,586,061,604
5. Step 5: Solve for x
   x = 7,586,061,604/64,810
6. Step 6: Final answer
   x = 117,050.79