Finding the Third Proportional to 392,443 and 847,602

Step by Step Solution

1. Step 1: Write the proportion equation
   392,443 : 847,602 = 847,602 : x
2. Step 2: Convert to fraction form
   392,443/847,602 = 847,602/x
3. Step 3: Cross multiply
   392,443x = 847,602 × 847,602
4. Step 4: Simplify right side
   392,443x = 718,429,150,404
5. Step 5: Solve for x
   x = 718,429,150,404/392,443
6. Step 6: Final answer
   x = 1,830,658.59