Finding the Third Proportional to 921,469.50 and 1,916,507.25

Step by Step Solution

1. Step 1: Write the proportion equation
   921,469.50 : 1,916,507.25 = 1,916,507.25 : x
2. Step 2: Convert to fraction form
   921,469.50/1,916,507.25 = 1,916,507.25/x
3. Step 3: Cross multiply
   921,469.50x = 1,916,507.25 × 1,916,507.25
4. Step 4: Simplify right side
   921,469.50x = 3,673,000,039,302.56
5. Step 5: Solve for x
   x = 3,673,000,039,302.56/921,469.50
6. Step 6: Final answer
   x = 3,986,024.54