Finding the Third Proportional to 3,148,690 and 6,521,426

Step by Step Solution

1. Step 1: Write the proportion equation
   3,148,690 : 6,521,426 = 6,521,426 : x
2. Step 2: Convert to fraction form
   3,148,690/6,521,426 = 6,521,426/x
3. Step 3: Cross multiply
   3,148,690x = 6,521,426 × 6,521,426
4. Step 4: Simplify right side
   3,148,690x = 42,528,997,073,476
5. Step 5: Solve for x
   x = 42,528,997,073,476/3,148,690
6. Step 6: Final answer
   x = 13,506,886.06