Finding the Third Proportional to 111,220,320 and 242,213,040

Step by Step Solution

1. Step 1: Write the proportion equation
   111,220,320 : 242,213,040 = 242,213,040 : x
2. Step 2: Convert to fraction form
   111,220,320/242,213,040 = 242,213,040/x
3. Step 3: Cross multiply
   111,220,320x = 242,213,040 × 242,213,040
4. Step 4: Simplify right side
   111,220,320x = 58,667,156,746,041,600
5. Step 5: Solve for x
   x = 58,667,156,746,041,600/111,220,320
6. Step 6: Final answer
   x = 527,485,955.32