Finding the Third Proportional to 4,047,912 and 8,696,142

Step by Step Solution

1. Step 1: Write the proportion equation
   4,047,912 : 8,696,142 = 8,696,142 : x
2. Step 2: Convert to fraction form
   4,047,912/8,696,142 = 8,696,142/x
3. Step 3: Cross multiply
   4,047,912x = 8,696,142 × 8,696,142
4. Step 4: Simplify right side
   4,047,912x = 75,622,885,684,164
5. Step 5: Solve for x
   x = 75,622,885,684,164/4,047,912
6. Step 6: Final answer
   x = 18,681,949.04