Finding the Third Proportional to 31,581,430 and 69,106,388

Step by Step Solution

1. Step 1: Write the proportion equation
   31,581,430 : 69,106,388 = 69,106,388 : x
2. Step 2: Convert to fraction form
   31,581,430/69,106,388 = 69,106,388/x
3. Step 3: Cross multiply
   31,581,430x = 69,106,388 × 69,106,388
4. Step 4: Simplify right side
   31,581,430x = 4,775,692,862,406,544
5. Step 5: Solve for x
   x = 4,775,692,862,406,544/31,581,430
6. Step 6: Final answer
   x = 151,218,385.69