Finding the Third Proportional to 69,569.72 and 148,978.41

Step by Step Solution

1. Step 1: Write the proportion equation
   69,569.72 : 148,978.41 = 148,978.41 : x
2. Step 2: Convert to fraction form
   69,569.72/148,978.41 = 148,978.41/x
3. Step 3: Cross multiply
   69,569.72x = 148,978.41 × 148,978.41
4. Step 4: Simplify right side
   69,569.72x = 22,194,565,528.79
5. Step 5: Solve for x
   x = 22,194,565,528.79/69,569.72
6. Step 6: Final answer
   x = 319,026.24