Finding the Third Proportional to 300,843 and 653,557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,843 : 653,557.50 = 653,557.50 : x
2. Step 2: Convert to fraction form
   300,843/653,557.50 = 653,557.50/x
3. Step 3: Cross multiply
   300,843x = 653,557.50 × 653,557.50
4. Step 4: Simplify right side
   300,843x = 427,137,405,806.25
5. Step 5: Solve for x
   x = 427,137,405,806.25/300,843
6. Step 6: Final answer
   x = 1,419,801.71