Finding the Third Proportional to 538,218 and 833,374.50

Step by Step Solution

1. Step 1: Write the proportion equation
   538,218 : 833,374.50 = 833,374.50 : x
2. Step 2: Convert to fraction form
   538,218/833,374.50 = 833,374.50/x
3. Step 3: Cross multiply
   538,218x = 833,374.50 × 833,374.50
4. Step 4: Simplify right side
   538,218x = 694,513,057,250.25
5. Step 5: Solve for x
   x = 694,513,057,250.25/538,218
6. Step 6: Final answer
   x = 1,290,393.59