Finding the Third Proportional to 242,443,620 and 369,718,499

Step by Step Solution

1. Step 1: Write the proportion equation
   242,443,620 : 369,718,499 = 369,718,499 : x
2. Step 2: Convert to fraction form
   242,443,620/369,718,499 = 369,718,499/x
3. Step 3: Cross multiply
   242,443,620x = 369,718,499 × 369,718,499
4. Step 4: Simplify right side
   242,443,620x = 136,691,768,502,813,008
5. Step 5: Solve for x
   x = 136,691,768,502,813,008/242,443,620
6. Step 6: Final answer
   x = 563,808,478.45