Finding the Third Proportional to 623,970.50 and 891,666

Step by Step Solution

1. Step 1: Write the proportion equation
   623,970.50 : 891,666 = 891,666 : x
2. Step 2: Convert to fraction form
   623,970.50/891,666 = 891,666/x
3. Step 3: Cross multiply
   623,970.50x = 891,666 × 891,666
4. Step 4: Simplify right side
   623,970.50x = 795,068,255,556
5. Step 5: Solve for x
   x = 795,068,255,556/623,970.50
6. Step 6: Final answer
   x = 1,274,208.08