Finding the Third Proportional to 218,700 and 470,614.50

Step by Step Solution

1. Step 1: Write the proportion equation
   218,700 : 470,614.50 = 470,614.50 : x
2. Step 2: Convert to fraction form
   218,700/470,614.50 = 470,614.50/x
3. Step 3: Cross multiply
   218,700x = 470,614.50 × 470,614.50
4. Step 4: Simplify right side
   218,700x = 221,478,007,610.25
5. Step 5: Solve for x
   x = 221,478,007,610.25/218,700
6. Step 6: Final answer
   x = 1,012,702.37