Finding the Third Proportional to 69,426,178.31 and 149,300,728.88

Step by Step Solution

1. Step 1: Write the proportion equation
   69,426,178.31 : 149,300,728.88 = 149,300,728.88 : x
2. Step 2: Convert to fraction form
   69,426,178.31/149,300,728.88 = 149,300,728.88/x
3. Step 3: Cross multiply
   69,426,178.31x = 149,300,728.88 × 149,300,728.88
4. Step 4: Simplify right side
   69,426,178.31x = 22,290,707,642,606,260
5. Step 5: Solve for x
   x = 22,290,707,642,606,260/69,426,178.31
6. Step 6: Final answer
   x = 321,070,642.00