Finding the Third Proportional to 67,113 and 146,212.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,113 : 146,212.50 = 146,212.50 : x
2. Step 2: Convert to fraction form
   67,113/146,212.50 = 146,212.50/x
3. Step 3: Cross multiply
   67,113x = 146,212.50 × 146,212.50
4. Step 4: Simplify right side
   67,113x = 21,378,095,156.25
5. Step 5: Solve for x
   x = 21,378,095,156.25/67,113
6. Step 6: Final answer
   x = 318,538.81