Finding the Third Proportional to 219,298 and 455,834

Step by Step Solution

1. Step 1: Write the proportion equation
   219,298 : 455,834 = 455,834 : x
2. Step 2: Convert to fraction form
   219,298/455,834 = 455,834/x
3. Step 3: Cross multiply
   219,298x = 455,834 × 455,834
4. Step 4: Simplify right side
   219,298x = 207,784,635,556
5. Step 5: Solve for x
   x = 207,784,635,556/219,298
6. Step 6: Final answer
   x = 947,499.00