Finding the Third Proportional to 379,107 and 570,199.50

Step by Step Solution

1. Step 1: Write the proportion equation
   379,107 : 570,199.50 = 570,199.50 : x
2. Step 2: Convert to fraction form
   379,107/570,199.50 = 570,199.50/x
3. Step 3: Cross multiply
   379,107x = 570,199.50 × 570,199.50
4. Step 4: Simplify right side
   379,107x = 325,127,469,800.25
5. Step 5: Solve for x
   x = 325,127,469,800.25/379,107
6. Step 6: Final answer
   x = 857,614.00