Finding the Third Proportional to 290,411 and 629,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   290,411 : 629,079.50 = 629,079.50 : x
2. Step 2: Convert to fraction form
   290,411/629,079.50 = 629,079.50/x
3. Step 3: Cross multiply
   290,411x = 629,079.50 × 629,079.50
4. Step 4: Simplify right side
   290,411x = 395,741,017,320.25
5. Step 5: Solve for x
   x = 395,741,017,320.25/290,411
6. Step 6: Final answer
   x = 1,362,692.93