Finding the Third Proportional to 686,845.50 and 1,009,687.50

Step by Step Solution

1. Step 1: Write the proportion equation
   686,845.50 : 1,009,687.50 = 1,009,687.50 : x
2. Step 2: Convert to fraction form
   686,845.50/1,009,687.50 = 1,009,687.50/x
3. Step 3: Cross multiply
   686,845.50x = 1,009,687.50 × 1,009,687.50
4. Step 4: Simplify right side
   686,845.50x = 1,019,468,847,656.25
5. Step 5: Solve for x
   x = 1,019,468,847,656.25/686,845.50
6. Step 6: Final answer
   x = 1,484,276.81