Finding the Third Proportional to 136,630.50 and 288,112.50

Step by Step Solution

1. Step 1: Write the proportion equation
   136,630.50 : 288,112.50 = 288,112.50 : x
2. Step 2: Convert to fraction form
   136,630.50/288,112.50 = 288,112.50/x
3. Step 3: Cross multiply
   136,630.50x = 288,112.50 × 288,112.50
4. Step 4: Simplify right side
   136,630.50x = 83,008,812,656.25
5. Step 5: Solve for x
   x = 83,008,812,656.25/136,630.50
6. Step 6: Final answer
   x = 607,542.33