Finding the Third Proportional to 367,311 and 556,521.75

Step by Step Solution

1. Step 1: Write the proportion equation
   367,311 : 556,521.75 = 556,521.75 : x
2. Step 2: Convert to fraction form
   367,311/556,521.75 = 556,521.75/x
3. Step 3: Cross multiply
   367,311x = 556,521.75 × 556,521.75
4. Step 4: Simplify right side
   367,311x = 309,716,458,223.06
5. Step 5: Solve for x
   x = 309,716,458,223.06/367,311
6. Step 6: Final answer
   x = 843,199.52