Finding the Third Proportional to 2,129,431 and 3,190,866

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,431 : 3,190,866 = 3,190,866 : x
2. Step 2: Convert to fraction form
   2,129,431/3,190,866 = 3,190,866/x
3. Step 3: Cross multiply
   2,129,431x = 3,190,866 × 3,190,866
4. Step 4: Simplify right side
   2,129,431x = 10,181,625,829,956
5. Step 5: Solve for x
   x = 10,181,625,829,956/2,129,431
6. Step 6: Final answer
   x = 4,781,383.30