Finding the Third Proportional to 59,160 and 89,360

Step by Step Solution

1. Step 1: Write the proportion equation
   59,160 : 89,360 = 89,360 : x
2. Step 2: Convert to fraction form
   59,160/89,360 = 89,360/x
3. Step 3: Cross multiply
   59,160x = 89,360 × 89,360
4. Step 4: Simplify right side
   59,160x = 7,985,209,600
5. Step 5: Solve for x
   x = 7,985,209,600/59,160
6. Step 6: Final answer
   x = 134,976.50