Finding the Third Proportional to 840,248 and 1,260,984

Step by Step Solution

1. Step 1: Write the proportion equation
   840,248 : 1,260,984 = 1,260,984 : x
2. Step 2: Convert to fraction form
   840,248/1,260,984 = 1,260,984/x
3. Step 3: Cross multiply
   840,248x = 1,260,984 × 1,260,984
4. Step 4: Simplify right side
   840,248x = 1,590,080,648,256
5. Step 5: Solve for x
   x = 1,590,080,648,256/840,248
6. Step 6: Final answer
   x = 1,892,394.45