Finding the Third Proportional to 62,302 and 89,557

Step by Step Solution

1. Step 1: Write the proportion equation
   62,302 : 89,557 = 89,557 : x
2. Step 2: Convert to fraction form
   62,302/89,557 = 89,557/x
3. Step 3: Cross multiply
   62,302x = 89,557 × 89,557
4. Step 4: Simplify right side
   62,302x = 8,020,456,249
5. Step 5: Solve for x
   x = 8,020,456,249/62,302
6. Step 6: Final answer
   x = 128,735.13