Finding the Third Proportional to 135,672 and 294,685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   135,672 : 294,685.50 = 294,685.50 : x
2. Step 2: Convert to fraction form
   135,672/294,685.50 = 294,685.50/x
3. Step 3: Cross multiply
   135,672x = 294,685.50 × 294,685.50
4. Step 4: Simplify right side
   135,672x = 86,839,543,910.25
5. Step 5: Solve for x
   x = 86,839,543,910.25/135,672
6. Step 6: Final answer
   x = 640,069.76