Finding the Third Proportional to 4,128,512 and 8,633,461

Step by Step Solution

1. Step 1: Write the proportion equation
   4,128,512 : 8,633,461 = 8,633,461 : x
2. Step 2: Convert to fraction form
   4,128,512/8,633,461 = 8,633,461/x
3. Step 3: Cross multiply
   4,128,512x = 8,633,461 × 8,633,461
4. Step 4: Simplify right side
   4,128,512x = 74,536,648,838,521
5. Step 5: Solve for x
   x = 74,536,648,838,521/4,128,512
6. Step 6: Final answer
   x = 18,054,119.46