Finding the Third Proportional to 573,420 and 910,978

Step by Step Solution

1. Step 1: Write the proportion equation
   573,420 : 910,978 = 910,978 : x
2. Step 2: Convert to fraction form
   573,420/910,978 = 910,978/x
3. Step 3: Cross multiply
   573,420x = 910,978 × 910,978
4. Step 4: Simplify right side
   573,420x = 829,880,916,484
5. Step 5: Solve for x
   x = 829,880,916,484/573,420
6. Step 6: Final answer
   x = 1,447,247.94