Finding the Third Proportional to 291,128.50 and 629,004

Step by Step Solution

1. Step 1: Write the proportion equation
   291,128.50 : 629,004 = 629,004 : x
2. Step 2: Convert to fraction form
   291,128.50/629,004 = 629,004/x
3. Step 3: Cross multiply
   291,128.50x = 629,004 × 629,004
4. Step 4: Simplify right side
   291,128.50x = 395,646,032,016
5. Step 5: Solve for x
   x = 395,646,032,016/291,128.50
6. Step 6: Final answer
   x = 1,359,008.25