Finding the Third Proportional to 377,761.50 and 570,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   377,761.50 : 570,280.50 = 570,280.50 : x
2. Step 2: Convert to fraction form
   377,761.50/570,280.50 = 570,280.50/x
3. Step 3: Cross multiply
   377,761.50x = 570,280.50 × 570,280.50
4. Step 4: Simplify right side
   377,761.50x = 325,219,848,680.25
5. Step 5: Solve for x
   x = 325,219,848,680.25/377,761.50
6. Step 6: Final answer
   x = 860,913.17