Finding the Third Proportional to 442,428 and 676,534.50

Step by Step Solution

1. Step 1: Write the proportion equation
   442,428 : 676,534.50 = 676,534.50 : x
2. Step 2: Convert to fraction form
   442,428/676,534.50 = 676,534.50/x
3. Step 3: Cross multiply
   442,428x = 676,534.50 × 676,534.50
4. Step 4: Simplify right side
   442,428x = 457,698,929,690.25
5. Step 5: Solve for x
   x = 457,698,929,690.25/442,428
6. Step 6: Final answer
   x = 1,034,516.19