Finding the Third Proportional to 62,290 and 89,538

Step by Step Solution

1. Step 1: Write the proportion equation
   62,290 : 89,538 = 89,538 : x
2. Step 2: Convert to fraction form
   62,290/89,538 = 89,538/x
3. Step 3: Cross multiply
   62,290x = 89,538 × 89,538
4. Step 4: Simplify right side
   62,290x = 8,017,053,444
5. Step 5: Solve for x
   x = 8,017,053,444/62,290
6. Step 6: Final answer
   x = 128,705.30