Finding the Third Proportional to 290,454.50 and 629,158

Step by Step Solution

1. Step 1: Write the proportion equation
   290,454.50 : 629,158 = 629,158 : x
2. Step 2: Convert to fraction form
   290,454.50/629,158 = 629,158/x
3. Step 3: Cross multiply
   290,454.50x = 629,158 × 629,158
4. Step 4: Simplify right side
   290,454.50x = 395,839,788,964
5. Step 5: Solve for x
   x = 395,839,788,964/290,454.50
6. Step 6: Final answer
   x = 1,362,828.91