Finding the Third Proportional to 208,131 and 309,892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   208,131 : 309,892.50 = 309,892.50 : x
2. Step 2: Convert to fraction form
   208,131/309,892.50 = 309,892.50/x
3. Step 3: Cross multiply
   208,131x = 309,892.50 × 309,892.50
4. Step 4: Simplify right side
   208,131x = 96,033,361,556.25
5. Step 5: Solve for x
   x = 96,033,361,556.25/208,131
6. Step 6: Final answer
   x = 461,408.26