Finding the Third Proportional to 42,838,344 and 65,261,520

Step by Step Solution

1. Step 1: Write the proportion equation
   42,838,344 : 65,261,520 = 65,261,520 : x
2. Step 2: Convert to fraction form
   42,838,344/65,261,520 = 65,261,520/x
3. Step 3: Cross multiply
   42,838,344x = 65,261,520 × 65,261,520
4. Step 4: Simplify right side
   42,838,344x = 4,259,065,992,710,400
5. Step 5: Solve for x
   x = 4,259,065,992,710,400/42,838,344
6. Step 6: Final answer
   x = 99,421,816.88