Finding the Third Proportional to 129,501 and 200,003.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,501 : 200,003.50 = 200,003.50 : x
2. Step 2: Convert to fraction form
   129,501/200,003.50 = 200,003.50/x
3. Step 3: Cross multiply
   129,501x = 200,003.50 × 200,003.50
4. Step 4: Simplify right side
   129,501x = 40,001,400,012.25
5. Step 5: Solve for x
   x = 40,001,400,012.25/129,501
6. Step 6: Final answer
   x = 308,888.73