Finding the Third Proportional to 1,691,899.31 and 3,523,221.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691,899.31 : 3,523,221.56 = 3,523,221.56 : x
2. Step 2: Convert to fraction form
   1,691,899.31/3,523,221.56 = 3,523,221.56/x
3. Step 3: Cross multiply
   1,691,899.31x = 3,523,221.56 × 3,523,221.56
4. Step 4: Simplify right side
   1,691,899.31x = 12,413,090,178,464.94
5. Step 5: Solve for x
   x = 12,413,090,178,464.94/1,691,899.31
6. Step 6: Final answer
   x = 7,336,778.31