Finding the Third Proportional to 284,145 and 441,157.50

Step by Step Solution

1. Step 1: Write the proportion equation
   284,145 : 441,157.50 = 441,157.50 : x
2. Step 2: Convert to fraction form
   284,145/441,157.50 = 441,157.50/x
3. Step 3: Cross multiply
   284,145x = 441,157.50 × 441,157.50
4. Step 4: Simplify right side
   284,145x = 194,619,939,806.25
5. Step 5: Solve for x
   x = 194,619,939,806.25/284,145
6. Step 6: Final answer
   x = 684,931.78