Finding the Third Proportional to 19,920 and 30,373.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,920 : 30,373.50 = 30,373.50 : x
2. Step 2: Convert to fraction form
   19,920/30,373.50 = 30,373.50/x
3. Step 3: Cross multiply
   19,920x = 30,373.50 × 30,373.50
4. Step 4: Simplify right side
   19,920x = 922,549,502.25
5. Step 5: Solve for x
   x = 922,549,502.25/19,920
6. Step 6: Final answer
   x = 46,312.73