Finding the Third Proportional to 379,115 and 570,210.50

Step by Step Solution

1. Step 1: Write the proportion equation
   379,115 : 570,210.50 = 570,210.50 : x
2. Step 2: Convert to fraction form
   379,115/570,210.50 = 570,210.50/x
3. Step 3: Cross multiply
   379,115x = 570,210.50 × 570,210.50
4. Step 4: Simplify right side
   379,115x = 325,140,014,310.25
5. Step 5: Solve for x
   x = 325,140,014,310.25/379,115
6. Step 6: Final answer
   x = 857,628.99