Finding the Third Proportional to 31,513,431 and 68,548,308

Step by Step Solution

1. Step 1: Write the proportion equation
   31,513,431 : 68,548,308 = 68,548,308 : x
2. Step 2: Convert to fraction form
   31,513,431/68,548,308 = 68,548,308/x
3. Step 3: Cross multiply
   31,513,431x = 68,548,308 × 68,548,308
4. Step 4: Simplify right side
   31,513,431x = 4,698,870,529,662,864
5. Step 5: Solve for x
   x = 4,698,870,529,662,864/31,513,431
6. Step 6: Final answer
   x = 149,106,916.66