Finding the Third Proportional to 218,181 and 456,222

Step by Step Solution

1. Step 1: Write the proportion equation
   218,181 : 456,222 = 456,222 : x
2. Step 2: Convert to fraction form
   218,181/456,222 = 456,222/x
3. Step 3: Cross multiply
   218,181x = 456,222 × 456,222
4. Step 4: Simplify right side
   218,181x = 208,138,513,284
5. Step 5: Solve for x
   x = 208,138,513,284/218,181
6. Step 6: Final answer
   x = 953,971.76