Finding the Third Proportional to 318,225.50 and 692,493

Step by Step Solution

1. Step 1: Write the proportion equation
   318,225.50 : 692,493 = 692,493 : x
2. Step 2: Convert to fraction form
   318,225.50/692,493 = 692,493/x
3. Step 3: Cross multiply
   318,225.50x = 692,493 × 692,493
4. Step 4: Simplify right side
   318,225.50x = 479,546,555,049
5. Step 5: Solve for x
   x = 479,546,555,049/318,225.50
6. Step 6: Final answer
   x = 1,506,939.43