Finding the Third Proportional to 4,046,445.50 and 8,666,789

Step by Step Solution

1. Step 1: Write the proportion equation
   4,046,445.50 : 8,666,789 = 8,666,789 : x
2. Step 2: Convert to fraction form
   4,046,445.50/8,666,789 = 8,666,789/x
3. Step 3: Cross multiply
   4,046,445.50x = 8,666,789 × 8,666,789
4. Step 4: Simplify right side
   4,046,445.50x = 75,113,231,570,521
5. Step 5: Solve for x
   x = 75,113,231,570,521/4,046,445.50
6. Step 6: Final answer
   x = 18,562,768.63