Finding the Third Proportional to 186,970.50 and 400,171.50

Step by Step Solution

1. Step 1: Write the proportion equation
   186,970.50 : 400,171.50 = 400,171.50 : x
2. Step 2: Convert to fraction form
   186,970.50/400,171.50 = 400,171.50/x
3. Step 3: Cross multiply
   186,970.50x = 400,171.50 × 400,171.50
4. Step 4: Simplify right side
   186,970.50x = 160,137,229,412.25
5. Step 5: Solve for x
   x = 160,137,229,412.25/186,970.50
6. Step 6: Final answer
   x = 856,483.93