Finding the Third Proportional to 291,766.50 and 443,646

Step by Step Solution

1. Step 1: Write the proportion equation
   291,766.50 : 443,646 = 443,646 : x
2. Step 2: Convert to fraction form
   291,766.50/443,646 = 443,646/x
3. Step 3: Cross multiply
   291,766.50x = 443,646 × 443,646
4. Step 4: Simplify right side
   291,766.50x = 196,821,773,316
5. Step 5: Solve for x
   x = 196,821,773,316/291,766.50
6. Step 6: Final answer
   x = 674,586.61