Finding the Third Proportional to 290,455.50 and 629,160

Step by Step Solution

1. Step 1: Write the proportion equation
   290,455.50 : 629,160 = 629,160 : x
2. Step 2: Convert to fraction form
   290,455.50/629,160 = 629,160/x
3. Step 3: Cross multiply
   290,455.50x = 629,160 × 629,160
4. Step 4: Simplify right side
   290,455.50x = 395,842,305,600
5. Step 5: Solve for x
   x = 395,842,305,600/290,455.50
6. Step 6: Final answer
   x = 1,362,832.88