Finding the Third Proportional to 219,210 and 297,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   219,210 : 297,061.50 = 297,061.50 : x
2. Step 2: Convert to fraction form
   219,210/297,061.50 = 297,061.50/x
3. Step 3: Cross multiply
   219,210x = 297,061.50 × 297,061.50
4. Step 4: Simplify right side
   219,210x = 88,245,534,782.25
5. Step 5: Solve for x
   x = 88,245,534,782.25/219,210
6. Step 6: Final answer
   x = 402,561.63