Finding the Third Proportional to 67,389,174 and 145,538,172

Step by Step Solution

1. Step 1: Write the proportion equation
   67,389,174 : 145,538,172 = 145,538,172 : x
2. Step 2: Convert to fraction form
   67,389,174/145,538,172 = 145,538,172/x
3. Step 3: Cross multiply
   67,389,174x = 145,538,172 × 145,538,172
4. Step 4: Simplify right side
   67,389,174x = 21,181,359,509,101,584
5. Step 5: Solve for x
   x = 21,181,359,509,101,584/67,389,174
6. Step 6: Final answer
   x = 314,313,980.30