Finding the Third Proportional to 402,435 and 852,835.50

Step by Step Solution

1. Step 1: Write the proportion equation
   402,435 : 852,835.50 = 852,835.50 : x
2. Step 2: Convert to fraction form
   402,435/852,835.50 = 852,835.50/x
3. Step 3: Cross multiply
   402,435x = 852,835.50 × 852,835.50
4. Step 4: Simplify right side
   402,435x = 727,328,390,060.25
5. Step 5: Solve for x
   x = 727,328,390,060.25/402,435
6. Step 6: Final answer
   x = 1,807,318.92