Finding the Third Proportional to 353,976 and 561,385.50

Step by Step Solution

1. Step 1: Write the proportion equation
   353,976 : 561,385.50 = 561,385.50 : x
2. Step 2: Convert to fraction form
   353,976/561,385.50 = 561,385.50/x
3. Step 3: Cross multiply
   353,976x = 561,385.50 × 561,385.50
4. Step 4: Simplify right side
   353,976x = 315,153,679,610.25
5. Step 5: Solve for x
   x = 315,153,679,610.25/353,976
6. Step 6: Final answer
   x = 890,324.99