Finding the Third Proportional to 134,358.50 and 293,278

Step by Step Solution

1. Step 1: Write the proportion equation
   134,358.50 : 293,278 = 293,278 : x
2. Step 2: Convert to fraction form
   134,358.50/293,278 = 293,278/x
3. Step 3: Cross multiply
   134,358.50x = 293,278 × 293,278
4. Step 4: Simplify right side
   134,358.50x = 86,011,985,284
5. Step 5: Solve for x
   x = 86,011,985,284/134,358.50
6. Step 6: Final answer
   x = 640,167.80