Finding the Third Proportional to 507,145.50 and 784,863

Step by Step Solution

1. Step 1: Write the proportion equation
   507,145.50 : 784,863 = 784,863 : x
2. Step 2: Convert to fraction form
   507,145.50/784,863 = 784,863/x
3. Step 3: Cross multiply
   507,145.50x = 784,863 × 784,863
4. Step 4: Simplify right side
   507,145.50x = 616,009,928,769
5. Step 5: Solve for x
   x = 616,009,928,769/507,145.50
6. Step 6: Final answer
   x = 1,214,661.14