Finding the Third Proportional to 691,391 and 1,037,105

Step by Step Solution

1. Step 1: Write the proportion equation
   691,391 : 1,037,105 = 1,037,105 : x
2. Step 2: Convert to fraction form
   691,391/1,037,105 = 1,037,105/x
3. Step 3: Cross multiply
   691,391x = 1,037,105 × 1,037,105
4. Step 4: Simplify right side
   691,391x = 1,075,586,781,025
5. Step 5: Solve for x
   x = 1,075,586,781,025/691,391
6. Step 6: Final answer
   x = 1,555,685.25