Finding the Third Proportional to 5,585,366 and 8,538,429

Step by Step Solution

1. Step 1: Write the proportion equation
   5,585,366 : 8,538,429 = 8,538,429 : x
2. Step 2: Convert to fraction form
   5,585,366/8,538,429 = 8,538,429/x
3. Step 3: Cross multiply
   5,585,366x = 8,538,429 × 8,538,429
4. Step 4: Simplify right side
   5,585,366x = 72,904,769,788,041
5. Step 5: Solve for x
   x = 72,904,769,788,041/5,585,366
6. Step 6: Final answer
   x = 13,052,818.70