Finding the Third Proportional to 146,200.10 and 315,004.89

Step by Step Solution

1. Step 1: Write the proportion equation
   146,200.10 : 315,004.89 = 315,004.89 : x
2. Step 2: Convert to fraction form
   146,200.10/315,004.89 = 315,004.89/x
3. Step 3: Cross multiply
   146,200.10x = 315,004.89 × 315,004.89
4. Step 4: Simplify right side
   146,200.10x = 99,228,078,656.70
5. Step 5: Solve for x
   x = 99,228,078,656.70/146,200.10
6. Step 6: Final answer
   x = 678,714.18