Finding the Third Proportional to 67,993,368 and 145,688,320

Step by Step Solution

1. Step 1: Write the proportion equation
   67,993,368 : 145,688,320 = 145,688,320 : x
2. Step 2: Convert to fraction form
   67,993,368/145,688,320 = 145,688,320/x
3. Step 3: Cross multiply
   67,993,368x = 145,688,320 × 145,688,320
4. Step 4: Simplify right side
   67,993,368x = 21,225,086,584,422,400
5. Step 5: Solve for x
   x = 21,225,086,584,422,400/67,993,368
6. Step 6: Final answer
   x = 312,164,071.42