Finding the Third Proportional to 691,388 and 1,037,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   691,388 : 1,037,099.50 = 1,037,099.50 : x
2. Step 2: Convert to fraction form
   691,388/1,037,099.50 = 1,037,099.50/x
3. Step 3: Cross multiply
   691,388x = 1,037,099.50 × 1,037,099.50
4. Step 4: Simplify right side
   691,388x = 1,075,575,372,900.25
5. Step 5: Solve for x
   x = 1,075,575,372,900.25/691,388
6. Step 6: Final answer
   x = 1,555,675.50