Finding the Third Proportional to 323,776.50 and 695,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   323,776.50 : 695,128.50 = 695,128.50 : x
2. Step 2: Convert to fraction form
   323,776.50/695,128.50 = 695,128.50/x
3. Step 3: Cross multiply
   323,776.50x = 695,128.50 × 695,128.50
4. Step 4: Simplify right side
   323,776.50x = 483,203,631,512.25
5. Step 5: Solve for x
   x = 483,203,631,512.25/323,776.50
6. Step 6: Final answer
   x = 1,492,398.71