Finding the Third Proportional to 643,704 and 945,847.50

Step by Step Solution

1. Step 1: Write the proportion equation
   643,704 : 945,847.50 = 945,847.50 : x
2. Step 2: Convert to fraction form
   643,704/945,847.50 = 945,847.50/x
3. Step 3: Cross multiply
   643,704x = 945,847.50 × 945,847.50
4. Step 4: Simplify right side
   643,704x = 894,627,493,256.25
5. Step 5: Solve for x
   x = 894,627,493,256.25/643,704
6. Step 6: Final answer
   x = 1,389,811.92