Finding the Third Proportional to 215,902.13 and 456,715.69

Step by Step Solution

1. Step 1: Write the proportion equation
   215,902.13 : 456,715.69 = 456,715.69 : x
2. Step 2: Convert to fraction form
   215,902.13/456,715.69 = 456,715.69/x
3. Step 3: Cross multiply
   215,902.13x = 456,715.69 × 456,715.69
4. Step 4: Simplify right side
   215,902.13x = 208,589,219,208.60
5. Step 5: Solve for x
   x = 208,589,219,208.60/215,902.13
6. Step 6: Final answer
   x = 966,128.61