Finding the Third Proportional to 210,019.50 and 318,924

Step by Step Solution

1. Step 1: Write the proportion equation
   210,019.50 : 318,924 = 318,924 : x
2. Step 2: Convert to fraction form
   210,019.50/318,924 = 318,924/x
3. Step 3: Cross multiply
   210,019.50x = 318,924 × 318,924
4. Step 4: Simplify right side
   210,019.50x = 101,712,517,776
5. Step 5: Solve for x
   x = 101,712,517,776/210,019.50
6. Step 6: Final answer
   x = 484,300.35