Finding the Third Proportional to 64,009.62 and 140,264.16

Step by Step Solution

1. Step 1: Write the proportion equation
   64,009.62 : 140,264.16 = 140,264.16 : x
2. Step 2: Convert to fraction form
   64,009.62/140,264.16 = 140,264.16/x
3. Step 3: Cross multiply
   64,009.62x = 140,264.16 × 140,264.16
4. Step 4: Simplify right side
   64,009.62x = 19,674,033,528.52
5. Step 5: Solve for x
   x = 19,674,033,528.52/64,009.62
6. Step 6: Final answer
   x = 307,360.59