Finding the Third Proportional to 686,861.50 and 1,009,711

Step by Step Solution

1. Step 1: Write the proportion equation
   686,861.50 : 1,009,711 = 1,009,711 : x
2. Step 2: Convert to fraction form
   686,861.50/1,009,711 = 1,009,711/x
3. Step 3: Cross multiply
   686,861.50x = 1,009,711 × 1,009,711
4. Step 4: Simplify right side
   686,861.50x = 1,019,516,303,521
5. Step 5: Solve for x
   x = 1,019,516,303,521/686,861.50
6. Step 6: Final answer
   x = 1,484,311.33