Finding the Third Proportional to 393,228 and 860,047.50

Step by Step Solution

1. Step 1: Write the proportion equation
   393,228 : 860,047.50 = 860,047.50 : x
2. Step 2: Convert to fraction form
   393,228/860,047.50 = 860,047.50/x
3. Step 3: Cross multiply
   393,228x = 860,047.50 × 860,047.50
4. Step 4: Simplify right side
   393,228x = 739,681,702,256.25
5. Step 5: Solve for x
   x = 739,681,702,256.25/393,228
6. Step 6: Final answer
   x = 1,881,050.44