Finding the Third Proportional to 67,398,318 and 145,536,264

Step by Step Solution

1. Step 1: Write the proportion equation
   67,398,318 : 145,536,264 = 145,536,264 : x
2. Step 2: Convert to fraction form
   67,398,318/145,536,264 = 145,536,264/x
3. Step 3: Cross multiply
   67,398,318x = 145,536,264 × 145,536,264
4. Step 4: Simplify right side
   67,398,318x = 21,180,804,139,077,696
5. Step 5: Solve for x
   x = 21,180,804,139,077,696/67,398,318
6. Step 6: Final answer
   x = 314,263,096.88