Finding the Third Proportional to 140,101.50 and 299,886

Step by Step Solution

1. Step 1: Write the proportion equation
   140,101.50 : 299,886 = 299,886 : x
2. Step 2: Convert to fraction form
   140,101.50/299,886 = 299,886/x
3. Step 3: Cross multiply
   140,101.50x = 299,886 × 299,886
4. Step 4: Simplify right side
   140,101.50x = 89,931,612,996
5. Step 5: Solve for x
   x = 89,931,612,996/140,101.50
6. Step 6: Final answer
   x = 641,903.28