Finding the Third Proportional to 64,851 and 142,003.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,851 : 142,003.50 = 142,003.50 : x
2. Step 2: Convert to fraction form
   64,851/142,003.50 = 142,003.50/x
3. Step 3: Cross multiply
   64,851x = 142,003.50 × 142,003.50
4. Step 4: Simplify right side
   64,851x = 20,164,994,012.25
5. Step 5: Solve for x
   x = 20,164,994,012.25/64,851
6. Step 6: Final answer
   x = 310,943.46