Finding the Third Proportional to 64,743.50 and 142,335

Step by Step Solution

1. Step 1: Write the proportion equation
   64,743.50 : 142,335 = 142,335 : x
2. Step 2: Convert to fraction form
   64,743.50/142,335 = 142,335/x
3. Step 3: Cross multiply
   64,743.50x = 142,335 × 142,335
4. Step 4: Simplify right side
   64,743.50x = 20,259,252,225
5. Step 5: Solve for x
   x = 20,259,252,225/64,743.50
6. Step 6: Final answer
   x = 312,915.62