Finding the Third Proportional to 623,887.50 and 991,722

Step by Step Solution

1. Step 1: Write the proportion equation
   623,887.50 : 991,722 = 991,722 : x
2. Step 2: Convert to fraction form
   623,887.50/991,722 = 991,722/x
3. Step 3: Cross multiply
   623,887.50x = 991,722 × 991,722
4. Step 4: Simplify right side
   623,887.50x = 983,512,525,284
5. Step 5: Solve for x
   x = 983,512,525,284/623,887.50
6. Step 6: Final answer
   x = 1,576,426.08