Finding the Third Proportional to 3,920,632 and 8,442,284

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920,632 : 8,442,284 = 8,442,284 : x
2. Step 2: Convert to fraction form
   3,920,632/8,442,284 = 8,442,284/x
3. Step 3: Cross multiply
   3,920,632x = 8,442,284 × 8,442,284
4. Step 4: Simplify right side
   3,920,632x = 71,272,159,136,656
5. Step 5: Solve for x
   x = 71,272,159,136,656/3,920,632
6. Step 6: Final answer
   x = 18,178,742.39