Finding the Third Proportional to 211,322 and 309,396.75

Step by Step Solution

1. Step 1: Write the proportion equation
   211,322 : 309,396.75 = 309,396.75 : x
2. Step 2: Convert to fraction form
   211,322/309,396.75 = 309,396.75/x
3. Step 3: Cross multiply
   211,322x = 309,396.75 × 309,396.75
4. Step 4: Simplify right side
   211,322x = 95,726,348,910.56
5. Step 5: Solve for x
   x = 95,726,348,910.56/211,322
6. Step 6: Final answer
   x = 452,988.09