Finding the Third Proportional to 186,670 and 438,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   186,670 : 438,789.50 = 438,789.50 : x
2. Step 2: Convert to fraction form
   186,670/438,789.50 = 438,789.50/x
3. Step 3: Cross multiply
   186,670x = 438,789.50 × 438,789.50
4. Step 4: Simplify right side
   186,670x = 192,536,225,310.25
5. Step 5: Solve for x
   x = 192,536,225,310.25/186,670
6. Step 6: Final answer
   x = 1,031,425.65