Finding the Third Proportional to 67,407,342 and 145,227,642

Step by Step Solution

1. Step 1: Write the proportion equation
   67,407,342 : 145,227,642 = 145,227,642 : x
2. Step 2: Convert to fraction form
   67,407,342/145,227,642 = 145,227,642/x
3. Step 3: Cross multiply
   67,407,342x = 145,227,642 × 145,227,642
4. Step 4: Simplify right side
   67,407,342x = 21,091,068,000,880,164
5. Step 5: Solve for x
   x = 21,091,068,000,880,164/67,407,342
6. Step 6: Final answer
   x = 312,889,773.95