Finding the Third Proportional to 4,039,088 and 8,645,564

Step by Step Solution

1. Step 1: Write the proportion equation
   4,039,088 : 8,645,564 = 8,645,564 : x
2. Step 2: Convert to fraction form
   4,039,088/8,645,564 = 8,645,564/x
3. Step 3: Cross multiply
   4,039,088x = 8,645,564 × 8,645,564
4. Step 4: Simplify right side
   4,039,088x = 74,745,776,878,096
5. Step 5: Solve for x
   x = 74,745,776,878,096/4,039,088
6. Step 6: Final answer
   x = 18,505,607.42