Finding the Third Proportional to 215,099 and 334,154

Step by Step Solution

1. Step 1: Write the proportion equation
   215,099 : 334,154 = 334,154 : x
2. Step 2: Convert to fraction form
   215,099/334,154 = 334,154/x
3. Step 3: Cross multiply
   215,099x = 334,154 × 334,154
4. Step 4: Simplify right side
   215,099x = 111,658,895,716
5. Step 5: Solve for x
   x = 111,658,895,716/215,099
6. Step 6: Final answer
   x = 519,104.67