Finding the Third Proportional to 300,064.50 and 651,645

Step by Step Solution

1. Step 1: Write the proportion equation
   300,064.50 : 651,645 = 651,645 : x
2. Step 2: Convert to fraction form
   300,064.50/651,645 = 651,645/x
3. Step 3: Cross multiply
   300,064.50x = 651,645 × 651,645
4. Step 4: Simplify right side
   300,064.50x = 424,641,206,025
5. Step 5: Solve for x
   x = 424,641,206,025/300,064.50
6. Step 6: Final answer
   x = 1,415,166.43