Finding the Third Proportional to 90,280 and 137,340

Step by Step Solution

1. Step 1: Write the proportion equation
   90,280 : 137,340 = 137,340 : x
2. Step 2: Convert to fraction form
   90,280/137,340 = 137,340/x
3. Step 3: Cross multiply
   90,280x = 137,340 × 137,340
4. Step 4: Simplify right side
   90,280x = 18,862,275,600
5. Step 5: Solve for x
   x = 18,862,275,600/90,280
6. Step 6: Final answer
   x = 208,930.83