Finding the Third Proportional to 64,397 and 140,235.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,397 : 140,235.50 = 140,235.50 : x
2. Step 2: Convert to fraction form
   64,397/140,235.50 = 140,235.50/x
3. Step 3: Cross multiply
   64,397x = 140,235.50 × 140,235.50
4. Step 4: Simplify right side
   64,397x = 19,665,995,460.25
5. Step 5: Solve for x
   x = 19,665,995,460.25/64,397
6. Step 6: Final answer
   x = 305,386.83