Finding the Third Proportional to 691,272 and 1,437,724

Step by Step Solution

1. Step 1: Write the proportion equation
   691,272 : 1,437,724 = 1,437,724 : x
2. Step 2: Convert to fraction form
   691,272/1,437,724 = 1,437,724/x
3. Step 3: Cross multiply
   691,272x = 1,437,724 × 1,437,724
4. Step 4: Simplify right side
   691,272x = 2,067,050,300,176
5. Step 5: Solve for x
   x = 2,067,050,300,176/691,272
6. Step 6: Final answer
   x = 2,990,212.68