Finding the Third Proportional to 5,585,368 and 8,538,432

Step by Step Solution

1. Step 1: Write the proportion equation
   5,585,368 : 8,538,432 = 8,538,432 : x
2. Step 2: Convert to fraction form
   5,585,368/8,538,432 = 8,538,432/x
3. Step 3: Cross multiply
   5,585,368x = 8,538,432 × 8,538,432
4. Step 4: Simplify right side
   5,585,368x = 72,904,821,018,624
5. Step 5: Solve for x
   x = 72,904,821,018,624/5,585,368
6. Step 6: Final answer
   x = 13,052,823.20