Finding the Third Proportional to 646,788.50 and 1,406,831

Step by Step Solution

1. Step 1: Write the proportion equation
   646,788.50 : 1,406,831 = 1,406,831 : x
2. Step 2: Convert to fraction form
   646,788.50/1,406,831 = 1,406,831/x
3. Step 3: Cross multiply
   646,788.50x = 1,406,831 × 1,406,831
4. Step 4: Simplify right side
   646,788.50x = 1,979,173,462,561
5. Step 5: Solve for x
   x = 1,979,173,462,561/646,788.50
6. Step 6: Final answer
   x = 3,060,001.01