Finding the Third Proportional to 2,129,434 and 3,190,870

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,434 : 3,190,870 = 3,190,870 : x
2. Step 2: Convert to fraction form
   2,129,434/3,190,870 = 3,190,870/x
3. Step 3: Cross multiply
   2,129,434x = 3,190,870 × 3,190,870
4. Step 4: Simplify right side
   2,129,434x = 10,181,651,356,900
5. Step 5: Solve for x
   x = 10,181,651,356,900/2,129,434
6. Step 6: Final answer
   x = 4,781,388.56