Finding the Third Proportional to 359,931 and 558,760.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,931 : 558,760.50 = 558,760.50 : x
2. Step 2: Convert to fraction form
   359,931/558,760.50 = 558,760.50/x
3. Step 3: Cross multiply
   359,931x = 558,760.50 × 558,760.50
4. Step 4: Simplify right side
   359,931x = 312,213,296,360.25
5. Step 5: Solve for x
   x = 312,213,296,360.25/359,931
6. Step 6: Final answer
   x = 867,425.41