Finding the Third Proportional to 687,315 and 1,437,222

Step by Step Solution

1. Step 1: Write the proportion equation
   687,315 : 1,437,222 = 1,437,222 : x
2. Step 2: Convert to fraction form
   687,315/1,437,222 = 1,437,222/x
3. Step 3: Cross multiply
   687,315x = 1,437,222 × 1,437,222
4. Step 4: Simplify right side
   687,315x = 2,065,607,077,284
5. Step 5: Solve for x
   x = 2,065,607,077,284/687,315
6. Step 6: Final answer
   x = 3,005,328.09