Finding the Third Proportional to 88,912 and 137,580

Step by Step Solution

1. Step 1: Write the proportion equation
   88,912 : 137,580 = 137,580 : x
2. Step 2: Convert to fraction form
   88,912/137,580 = 137,580/x
3. Step 3: Cross multiply
   88,912x = 137,580 × 137,580
4. Step 4: Simplify right side
   88,912x = 18,928,256,400
5. Step 5: Solve for x
   x = 18,928,256,400/88,912
6. Step 6: Final answer
   x = 212,887.53