Finding the Third Proportional to 31,513,468 and 68,548,380

Step by Step Solution

1. Step 1: Write the proportion equation
   31,513,468 : 68,548,380 = 68,548,380 : x
2. Step 2: Convert to fraction form
   31,513,468/68,548,380 = 68,548,380/x
3. Step 3: Cross multiply
   31,513,468x = 68,548,380 × 68,548,380
4. Step 4: Simplify right side
   31,513,468x = 4,698,880,400,624,400
5. Step 5: Solve for x
   x = 4,698,880,400,624,400/31,513,468
6. Step 6: Final answer
   x = 149,107,054.82