Finding the Third Proportional to 4,128,514 and 8,633,465

Step by Step Solution

1. Step 1: Write the proportion equation
   4,128,514 : 8,633,465 = 8,633,465 : x
2. Step 2: Convert to fraction form
   4,128,514/8,633,465 = 8,633,465/x
3. Step 3: Cross multiply
   4,128,514x = 8,633,465 × 8,633,465
4. Step 4: Simplify right side
   4,128,514x = 74,536,717,906,225
5. Step 5: Solve for x
   x = 74,536,717,906,225/4,128,514
6. Step 6: Final answer
   x = 18,054,127.44