Finding the Third Proportional to 618,318 and 983,578.50

Step by Step Solution

1. Step 1: Write the proportion equation
   618,318 : 983,578.50 = 983,578.50 : x
2. Step 2: Convert to fraction form
   618,318/983,578.50 = 983,578.50/x
3. Step 3: Cross multiply
   618,318x = 983,578.50 × 983,578.50
4. Step 4: Simplify right side
   618,318x = 967,426,665,662.25
5. Step 5: Solve for x
   x = 967,426,665,662.25/618,318
6. Step 6: Final answer
   x = 1,564,610.23