Finding the Third Proportional to 153,139.50 and 236,587.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,139.50 : 236,587.50 = 236,587.50 : x
2. Step 2: Convert to fraction form
   153,139.50/236,587.50 = 236,587.50/x
3. Step 3: Cross multiply
   153,139.50x = 236,587.50 × 236,587.50
4. Step 4: Simplify right side
   153,139.50x = 55,973,645,156.25
5. Step 5: Solve for x
   x = 55,973,645,156.25/153,139.50
6. Step 6: Final answer
   x = 365,507.56