Finding the Third Proportional to 60,339 and 90,391.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,339 : 90,391.50 = 90,391.50 : x
2. Step 2: Convert to fraction form
   60,339/90,391.50 = 90,391.50/x
3. Step 3: Cross multiply
   60,339x = 90,391.50 × 90,391.50
4. Step 4: Simplify right side
   60,339x = 8,170,623,272.25
5. Step 5: Solve for x
   x = 8,170,623,272.25/60,339
6. Step 6: Final answer
   x = 135,411.98