Finding the Third Proportional to 661,918.50 and 1,428,786

Step by Step Solution

1. Step 1: Write the proportion equation
   661,918.50 : 1,428,786 = 1,428,786 : x
2. Step 2: Convert to fraction form
   661,918.50/1,428,786 = 1,428,786/x
3. Step 3: Cross multiply
   661,918.50x = 1,428,786 × 1,428,786
4. Step 4: Simplify right side
   661,918.50x = 2,041,429,433,796
5. Step 5: Solve for x
   x = 2,041,429,433,796/661,918.50
6. Step 6: Final answer
   x = 3,084,109.95