Finding the Third Proportional to 691,300 and 1,437,778

Step by Step Solution

1. Step 1: Write the proportion equation
   691,300 : 1,437,778 = 1,437,778 : x
2. Step 2: Convert to fraction form
   691,300/1,437,778 = 1,437,778/x
3. Step 3: Cross multiply
   691,300x = 1,437,778 × 1,437,778
4. Step 4: Simplify right side
   691,300x = 2,067,205,577,284
5. Step 5: Solve for x
   x = 2,067,205,577,284/691,300
6. Step 6: Final answer
   x = 2,990,316.18