Finding the Third Proportional to 31,384 and 68,988.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,384 : 68,988.50 = 68,988.50 : x
2. Step 2: Convert to fraction form
   31,384/68,988.50 = 68,988.50/x
3. Step 3: Cross multiply
   31,384x = 68,988.50 × 68,988.50
4. Step 4: Simplify right side
   31,384x = 4,759,413,132.25
5. Step 5: Solve for x
   x = 4,759,413,132.25/31,384
6. Step 6: Final answer
   x = 151,650.94