Finding the Third Proportional to 559,455 and 867,856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   559,455 : 867,856.50 = 867,856.50 : x
2. Step 2: Convert to fraction form
   559,455/867,856.50 = 867,856.50/x
3. Step 3: Cross multiply
   559,455x = 867,856.50 × 867,856.50
4. Step 4: Simplify right side
   559,455x = 753,174,904,592.25
5. Step 5: Solve for x
   x = 753,174,904,592.25/559,455
6. Step 6: Final answer
   x = 1,346,265.39