Finding the Third Proportional to 69,711 and 148,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,711 : 148,411.50 = 148,411.50 : x
2. Step 2: Convert to fraction form
   69,711/148,411.50 = 148,411.50/x
3. Step 3: Cross multiply
   69,711x = 148,411.50 × 148,411.50
4. Step 4: Simplify right side
   69,711x = 22,025,973,332.25
5. Step 5: Solve for x
   x = 22,025,973,332.25/69,711
6. Step 6: Final answer
   x = 315,961.23