Finding the Third Proportional to 175,315.50 and 378,654

Step by Step Solution

1. Step 1: Write the proportion equation
   175,315.50 : 378,654 = 378,654 : x
2. Step 2: Convert to fraction form
   175,315.50/378,654 = 378,654/x
3. Step 3: Cross multiply
   175,315.50x = 378,654 × 378,654
4. Step 4: Simplify right side
   175,315.50x = 143,378,851,716
5. Step 5: Solve for x
   x = 143,378,851,716/175,315.50
6. Step 6: Final answer
   x = 817,833.29