Finding the Third Proportional to 218,138.06 and 456,141.38

Step by Step Solution

1. Step 1: Write the proportion equation
   218,138.06 : 456,141.38 = 456,141.38 : x
2. Step 2: Convert to fraction form
   218,138.06/456,141.38 = 456,141.38/x
3. Step 3: Cross multiply
   218,138.06x = 456,141.38 × 456,141.38
4. Step 4: Simplify right side
   218,138.06x = 208,064,953,986.89
5. Step 5: Solve for x
   x = 208,064,953,986.89/218,138.06
6. Step 6: Final answer
   x = 953,822.33