Finding the Third Proportional to 64,176.75 and 136,667.25

Step by Step Solution

1. Step 1: Write the proportion equation
   64,176.75 : 136,667.25 = 136,667.25 : x
2. Step 2: Convert to fraction form
   64,176.75/136,667.25 = 136,667.25/x
3. Step 3: Cross multiply
   64,176.75x = 136,667.25 × 136,667.25
4. Step 4: Simplify right side
   64,176.75x = 18,677,937,222.56
5. Step 5: Solve for x
   x = 18,677,937,222.56/64,176.75
6. Step 6: Final answer
   x = 291,039.00