Finding the Third Proportional to 67,992,688.50 and 145,686,943.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,992,688.50 : 145,686,943.50 = 145,686,943.50 : x
2. Step 2: Convert to fraction form
   67,992,688.50/145,686,943.50 = 145,686,943.50/x
3. Step 3: Cross multiply
   67,992,688.50x = 145,686,943.50 × 145,686,943.50
4. Step 4: Simplify right side
   67,992,688.50x = 21,224,685,506,372,192
5. Step 5: Solve for x
   x = 21,224,685,506,372,192/67,992,688.50
6. Step 6: Final answer
   x = 312,161,292.26