Finding the Third Proportional to 291,630 and 456,492

Step by Step Solution

1. Step 1: Write the proportion equation
   291,630 : 456,492 = 456,492 : x
2. Step 2: Convert to fraction form
   291,630/456,492 = 456,492/x
3. Step 3: Cross multiply
   291,630x = 456,492 × 456,492
4. Step 4: Simplify right side
   291,630x = 208,384,946,064
5. Step 5: Solve for x
   x = 208,384,946,064/291,630
6. Step 6: Final answer
   x = 714,552.50