Finding the Third Proportional to 356,520 and 534,856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,520 : 534,856.50 = 534,856.50 : x
2. Step 2: Convert to fraction form
   356,520/534,856.50 = 534,856.50/x
3. Step 3: Cross multiply
   356,520x = 534,856.50 × 534,856.50
4. Step 4: Simplify right side
   356,520x = 286,071,475,592.25
5. Step 5: Solve for x
   x = 286,071,475,592.25/356,520
6. Step 6: Final answer
   x = 802,399.52