Finding the Third Proportional to 538,218 and 832,835.25

Step by Step Solution

1. Step 1: Write the proportion equation
   538,218 : 832,835.25 = 832,835.25 : x
2. Step 2: Convert to fraction form
   538,218/832,835.25 = 832,835.25/x
3. Step 3: Cross multiply
   538,218x = 832,835.25 × 832,835.25
4. Step 4: Simplify right side
   538,218x = 693,614,553,642.56
5. Step 5: Solve for x
   x = 693,614,553,642.56/538,218
6. Step 6: Final answer
   x = 1,288,724.19