Finding the Third Proportional to 148,672.13 and 216,756

Step by Step Solution

1. Step 1: Write the proportion equation
   148,672.13 : 216,756 = 216,756 : x
2. Step 2: Convert to fraction form
   148,672.13/216,756 = 216,756/x
3. Step 3: Cross multiply
   148,672.13x = 216,756 × 216,756
4. Step 4: Simplify right side
   148,672.13x = 46,983,163,536
5. Step 5: Solve for x
   x = 46,983,163,536/148,672.13
6. Step 6: Final answer
   x = 316,018.65