Finding the Third Proportional to 140,989.50 and 307,703.25

Step by Step Solution

1. Step 1: Write the proportion equation
   140,989.50 : 307,703.25 = 307,703.25 : x
2. Step 2: Convert to fraction form
   140,989.50/307,703.25 = 307,703.25/x
3. Step 3: Cross multiply
   140,989.50x = 307,703.25 × 307,703.25
4. Step 4: Simplify right side
   140,989.50x = 94,681,290,060.56
5. Step 5: Solve for x
   x = 94,681,290,060.56/140,989.50
6. Step 6: Final answer
   x = 671,548.52