Finding the Third Proportional to 377,309 and 570,824.50

Step by Step Solution

1. Step 1: Write the proportion equation
   377,309 : 570,824.50 = 570,824.50 : x
2. Step 2: Convert to fraction form
   377,309/570,824.50 = 570,824.50/x
3. Step 3: Cross multiply
   377,309x = 570,824.50 × 570,824.50
4. Step 4: Simplify right side
   377,309x = 325,840,609,800.25
5. Step 5: Solve for x
   x = 325,840,609,800.25/377,309
6. Step 6: Final answer
   x = 863,590.88