Finding the Third Proportional to 590,405 and 939,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   590,405 : 939,909.50 = 939,909.50 : x
2. Step 2: Convert to fraction form
   590,405/939,909.50 = 939,909.50/x
3. Step 3: Cross multiply
   590,405x = 939,909.50 × 939,909.50
4. Step 4: Simplify right side
   590,405x = 883,429,868,190.25
5. Step 5: Solve for x
   x = 883,429,868,190.25/590,405
6. Step 6: Final answer
   x = 1,496,311.63