Finding the Third Proportional to 356,624 and 777,219.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,624 : 777,219.50 = 777,219.50 : x
2. Step 2: Convert to fraction form
   356,624/777,219.50 = 777,219.50/x
3. Step 3: Cross multiply
   356,624x = 777,219.50 × 777,219.50
4. Step 4: Simplify right side
   356,624x = 604,070,151,180.25
5. Step 5: Solve for x
   x = 604,070,151,180.25/356,624
6. Step 6: Final answer
   x = 1,693,857.26