Finding the Third Proportional to 3,676,320 and 5,386,320

Step by Step Solution

1. Step 1: Write the proportion equation
   3,676,320 : 5,386,320 = 5,386,320 : x
2. Step 2: Convert to fraction form
   3,676,320/5,386,320 = 5,386,320/x
3. Step 3: Cross multiply
   3,676,320x = 5,386,320 × 5,386,320
4. Step 4: Simplify right side
   3,676,320x = 29,012,443,142,400
5. Step 5: Solve for x
   x = 29,012,443,142,400/3,676,320
6. Step 6: Final answer
   x = 7,891,707.78