Finding the Third Proportional to 215,730 and 322,363.50

Step by Step Solution

1. Step 1: Write the proportion equation
   215,730 : 322,363.50 = 322,363.50 : x
2. Step 2: Convert to fraction form
   215,730/322,363.50 = 322,363.50/x
3. Step 3: Cross multiply
   215,730x = 322,363.50 × 322,363.50
4. Step 4: Simplify right side
   215,730x = 103,918,226,132.25
5. Step 5: Solve for x
   x = 103,918,226,132.25/215,730
6. Step 6: Final answer
   x = 481,705.03