Finding the Third Proportional to 3,908,210 and 8,611,532

Step by Step Solution

1. Step 1: Write the proportion equation
   3,908,210 : 8,611,532 = 8,611,532 : x
2. Step 2: Convert to fraction form
   3,908,210/8,611,532 = 8,611,532/x
3. Step 3: Cross multiply
   3,908,210x = 8,611,532 × 8,611,532
4. Step 4: Simplify right side
   3,908,210x = 74,158,483,387,024
5. Step 5: Solve for x
   x = 74,158,483,387,024/3,908,210
6. Step 6: Final answer
   x = 18,975,050.83