Finding the Third Proportional to 1,188,432 and 2,561,666

Step by Step Solution

1. Step 1: Write the proportion equation
   1,188,432 : 2,561,666 = 2,561,666 : x
2. Step 2: Convert to fraction form
   1,188,432/2,561,666 = 2,561,666/x
3. Step 3: Cross multiply
   1,188,432x = 2,561,666 × 2,561,666
4. Step 4: Simplify right side
   1,188,432x = 6,562,132,695,556
5. Step 5: Solve for x
   x = 6,562,132,695,556/1,188,432
6. Step 6: Final answer
   x = 5,521,672.84