Finding the Third Proportional to 291,762 and 443,639.25

Step by Step Solution

1. Step 1: Write the proportion equation
   291,762 : 443,639.25 = 443,639.25 : x
2. Step 2: Convert to fraction form
   291,762/443,639.25 = 443,639.25/x
3. Step 3: Cross multiply
   291,762x = 443,639.25 × 443,639.25
4. Step 4: Simplify right side
   291,762x = 196,815,784,140.56
5. Step 5: Solve for x
   x = 196,815,784,140.56/291,762
6. Step 6: Final answer
   x = 674,576.48