Finding the Third Proportional to 4,154,249 and 8,638,735

Step by Step Solution

1. Step 1: Write the proportion equation
   4,154,249 : 8,638,735 = 8,638,735 : x
2. Step 2: Convert to fraction form
   4,154,249/8,638,735 = 8,638,735/x
3. Step 3: Cross multiply
   4,154,249x = 8,638,735 × 8,638,735
4. Step 4: Simplify right side
   4,154,249x = 74,627,742,400,225
5. Step 5: Solve for x
   x = 74,627,742,400,225/4,154,249
6. Step 6: Final answer
   x = 17,964,195.79