Finding the Third Proportional to 3,550,840 and 7,766,129

Step by Step Solution

1. Step 1: Write the proportion equation
   3,550,840 : 7,766,129 = 7,766,129 : x
2. Step 2: Convert to fraction form
   3,550,840/7,766,129 = 7,766,129/x
3. Step 3: Cross multiply
   3,550,840x = 7,766,129 × 7,766,129
4. Step 4: Simplify right side
   3,550,840x = 60,312,759,644,641
5. Step 5: Solve for x
   x = 60,312,759,644,641/3,550,840
6. Step 6: Final answer
   x = 16,985,490.66