Finding the Third Proportional to 147,426.75 and 315,886.50

Step by Step Solution

1. Step 1: Write the proportion equation
   147,426.75 : 315,886.50 = 315,886.50 : x
2. Step 2: Convert to fraction form
   147,426.75/315,886.50 = 315,886.50/x
3. Step 3: Cross multiply
   147,426.75x = 315,886.50 × 315,886.50
4. Step 4: Simplify right side
   147,426.75x = 99,784,280,882.25
5. Step 5: Solve for x
   x = 99,784,280,882.25/147,426.75
6. Step 6: Final answer
   x = 676,839.72