Finding the Third Proportional to 147,430.50 and 315,892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   147,430.50 : 315,892.50 = 315,892.50 : x
2. Step 2: Convert to fraction form
   147,430.50/315,892.50 = 315,892.50/x
3. Step 3: Cross multiply
   147,430.50x = 315,892.50 × 315,892.50
4. Step 4: Simplify right side
   147,430.50x = 99,788,071,556.25
5. Step 5: Solve for x
   x = 99,788,071,556.25/147,430.50
6. Step 6: Final answer
   x = 676,848.22