Finding the Third Proportional to 62,813 and 89,913

Step by Step Solution

1. Step 1: Write the proportion equation
   62,813 : 89,913 = 89,913 : x
2. Step 2: Convert to fraction form
   62,813/89,913 = 89,913/x
3. Step 3: Cross multiply
   62,813x = 89,913 × 89,913
4. Step 4: Simplify right side
   62,813x = 8,084,347,569
5. Step 5: Solve for x
   x = 8,084,347,569/62,813
6. Step 6: Final answer
   x = 128,705.01