Finding the Third Proportional to 290,437.50 and 629,126

Step by Step Solution

1. Step 1: Write the proportion equation
   290,437.50 : 629,126 = 629,126 : x
2. Step 2: Convert to fraction form
   290,437.50/629,126 = 629,126/x
3. Step 3: Cross multiply
   290,437.50x = 629,126 × 629,126
4. Step 4: Simplify right side
   290,437.50x = 395,799,523,876
5. Step 5: Solve for x
   x = 395,799,523,876/290,437.50
6. Step 6: Final answer
   x = 1,362,770.04