Finding the Third Proportional to 162,807 and 251,587.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,807 : 251,587.50 = 251,587.50 : x
2. Step 2: Convert to fraction form
   162,807/251,587.50 = 251,587.50/x
3. Step 3: Cross multiply
   162,807x = 251,587.50 × 251,587.50
4. Step 4: Simplify right side
   162,807x = 63,296,270,156.25
5. Step 5: Solve for x
   x = 63,296,270,156.25/162,807
6. Step 6: Final answer
   x = 388,781.01