Finding the Third Proportional to 620,709 and 1,333,279.50

Step by Step Solution

1. Step 1: Write the proportion equation
   620,709 : 1,333,279.50 = 1,333,279.50 : x
2. Step 2: Convert to fraction form
   620,709/1,333,279.50 = 1,333,279.50/x
3. Step 3: Cross multiply
   620,709x = 1,333,279.50 × 1,333,279.50
4. Step 4: Simplify right side
   620,709x = 1,777,634,225,120.25
5. Step 5: Solve for x
   x = 1,777,634,225,120.25/620,709
6. Step 6: Final answer
   x = 2,863,876.99