Finding the Third Proportional to 58,138 and 89,475

Step by Step Solution

1. Step 1: Write the proportion equation
   58,138 : 89,475 = 89,475 : x
2. Step 2: Convert to fraction form
   58,138/89,475 = 89,475/x
3. Step 3: Cross multiply
   58,138x = 89,475 × 89,475
4. Step 4: Simplify right side
   58,138x = 8,005,775,625
5. Step 5: Solve for x
   x = 8,005,775,625/58,138
6. Step 6: Final answer
   x = 137,702.98