Finding the Third Proportional to 540,924 and 840,870

Step by Step Solution

1. Step 1: Write the proportion equation
   540,924 : 840,870 = 840,870 : x
2. Step 2: Convert to fraction form
   540,924/840,870 = 840,870/x
3. Step 3: Cross multiply
   540,924x = 840,870 × 840,870
4. Step 4: Simplify right side
   540,924x = 707,062,356,900
5. Step 5: Solve for x
   x = 707,062,356,900/540,924
6. Step 6: Final answer
   x = 1,307,138.08