Finding the Third Proportional to 147,393 and 315,814.50

Step by Step Solution

1. Step 1: Write the proportion equation
   147,393 : 315,814.50 = 315,814.50 : x
2. Step 2: Convert to fraction form
   147,393/315,814.50 = 315,814.50/x
3. Step 3: Cross multiply
   147,393x = 315,814.50 × 315,814.50
4. Step 4: Simplify right side
   147,393x = 99,738,798,410.25
5. Step 5: Solve for x
   x = 99,738,798,410.25/147,393
6. Step 6: Final answer
   x = 676,686.13