Finding the Third Proportional to 408,682.50 and 890,931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   408,682.50 : 890,931.50 = 890,931.50 : x
2. Step 2: Convert to fraction form
   408,682.50/890,931.50 = 890,931.50/x
3. Step 3: Cross multiply
   408,682.50x = 890,931.50 × 890,931.50
4. Step 4: Simplify right side
   408,682.50x = 793,758,937,692.25
5. Step 5: Solve for x
   x = 793,758,937,692.25/408,682.50
6. Step 6: Final answer
   x = 1,942,238.63