Finding the Third Proportional to 4,154,292 and 8,638,812

Step by Step Solution

1. Step 1: Write the proportion equation
   4,154,292 : 8,638,812 = 8,638,812 : x
2. Step 2: Convert to fraction form
   4,154,292/8,638,812 = 8,638,812/x
3. Step 3: Cross multiply
   4,154,292x = 8,638,812 × 8,638,812
4. Step 4: Simplify right side
   4,154,292x = 74,629,072,771,344
5. Step 5: Solve for x
   x = 74,629,072,771,344/4,154,292
6. Step 6: Final answer
   x = 17,964,330.09