Finding the Third Proportional to 19,618,854 and 42,236,064

Step by Step Solution

1. Step 1: Write the proportion equation
   19,618,854 : 42,236,064 = 42,236,064 : x
2. Step 2: Convert to fraction form
   19,618,854/42,236,064 = 42,236,064/x
3. Step 3: Cross multiply
   19,618,854x = 42,236,064 × 42,236,064
4. Step 4: Simplify right side
   19,618,854x = 1,783,885,102,212,096
5. Step 5: Solve for x
   x = 1,783,885,102,212,096/19,618,854
6. Step 6: Final answer
   x = 90,927,079.75