Finding the Third Proportional to 28,717.19 and 42,902.79

Step by Step Solution

1. Step 1: Write the proportion equation
   28,717.19 : 42,902.79 = 42,902.79 : x
2. Step 2: Convert to fraction form
   28,717.19/42,902.79 = 42,902.79/x
3. Step 3: Cross multiply
   28,717.19x = 42,902.79 × 42,902.79
4. Step 4: Simplify right side
   28,717.19x = 1,840,649,309.34
5. Step 5: Solve for x
   x = 1,840,649,309.34/28,717.19
6. Step 6: Final answer
   x = 64,095.73