Finding the Third Proportional to 214,972.50 and 455,556

Step by Step Solution

1. Step 1: Write the proportion equation
   214,972.50 : 455,556 = 455,556 : x
2. Step 2: Convert to fraction form
   214,972.50/455,556 = 455,556/x
3. Step 3: Cross multiply
   214,972.50x = 455,556 × 455,556
4. Step 4: Simplify right side
   214,972.50x = 207,531,269,136
5. Step 5: Solve for x
   x = 207,531,269,136/214,972.50
6. Step 6: Final answer
   x = 965,385.20