Finding the Third Proportional to 31,384,570.50 and 67,578,354

Step by Step Solution

1. Step 1: Write the proportion equation
   31,384,570.50 : 67,578,354 = 67,578,354 : x
2. Step 2: Convert to fraction form
   31,384,570.50/67,578,354 = 67,578,354/x
3. Step 3: Cross multiply
   31,384,570.50x = 67,578,354 × 67,578,354
4. Step 4: Simplify right side
   31,384,570.50x = 4,566,833,929,349,316
5. Step 5: Solve for x
   x = 4,566,833,929,349,316/31,384,570.50
6. Step 6: Final answer
   x = 145,512,073.50