Finding the Third Proportional to 19,618,853 and 42,236,063

Step by Step Solution

1. Step 1: Write the proportion equation
   19,618,853 : 42,236,063 = 42,236,063 : x
2. Step 2: Convert to fraction form
   19,618,853/42,236,063 = 42,236,063/x
3. Step 3: Cross multiply
   19,618,853x = 42,236,063 × 42,236,063
4. Step 4: Simplify right side
   19,618,853x = 1,783,885,017,739,969
5. Step 5: Solve for x
   x = 1,783,885,017,739,969/19,618,853
6. Step 6: Final answer
   x = 90,927,080.08