Finding the Third Proportional to 31,801.50 and 69,070.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,801.50 : 69,070.50 = 69,070.50 : x
2. Step 2: Convert to fraction form
   31,801.50/69,070.50 = 69,070.50/x
3. Step 3: Cross multiply
   31,801.50x = 69,070.50 × 69,070.50
4. Step 4: Simplify right side
   31,801.50x = 4,770,733,970.25
5. Step 5: Solve for x
   x = 4,770,733,970.25/31,801.50
6. Step 6: Final answer
   x = 150,016.00