Finding the Third Proportional to 42,685.50 and 70,783

Step by Step Solution

1. Step 1: Write the proportion equation
   42,685.50 : 70,783 = 70,783 : x
2. Step 2: Convert to fraction form
   42,685.50/70,783 = 70,783/x
3. Step 3: Cross multiply
   42,685.50x = 70,783 × 70,783
4. Step 4: Simplify right side
   42,685.50x = 5,010,233,089
5. Step 5: Solve for x
   x = 5,010,233,089/42,685.50
6. Step 6: Final answer
   x = 117,375.53