Finding the Third Proportional to 62,816 and 89,917

Step by Step Solution

1. Step 1: Write the proportion equation
   62,816 : 89,917 = 89,917 : x
2. Step 2: Convert to fraction form
   62,816/89,917 = 89,917/x
3. Step 3: Cross multiply
   62,816x = 89,917 × 89,917
4. Step 4: Simplify right side
   62,816x = 8,085,066,889
5. Step 5: Solve for x
   x = 8,085,066,889/62,816
6. Step 6: Final answer
   x = 128,710.31